Thermohaline mixing in stars and the long-standing 3He problem

Thermohaline mixing has been recently identified as the dominating process that governs the photospheric composition of low-mass bright giant stars (Charbonnel & Zahn 2007). Here we present the predictions of stellar models computed with the code STAREVOL taking into account this mechanism toget...

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Bibliographic Details
Published in:Proceedings of the International Astronomical Union 2009-08, Vol.5 (S265), p.205-208
Main Authors: Charbonnel, Corinne, Lagarde, Nadège
Format: Article
Language:English
Subjects:
Astronomy
Chemical elements
Contributed Papers
Fluid mechanics
Star & galaxy formation
Stars & galaxies
Online Access:Get full text
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Summary:Thermohaline mixing has been recently identified as the dominating process that governs the photospheric composition of low-mass bright giant stars (Charbonnel & Zahn 2007). Here we present the predictions of stellar models computed with the code STAREVOL taking into account this mechanism together with rotational mixing and atomic diffusion. We compare our theorical predictions with recent observations and discuss how the corresponding yields for 3He are compatible with the observed behaviour of this light element in our Galaxy.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921310000554